Sealing tool



Dec. 9, IQSQ, E. WESTPHAL SEALING TOOL Filed Aug. '22, 1927 PatentedDec. 9, 1930 iJNiTED STATES annonrn a. wns'rrm, or cmcaao,

x ILLINOIS, ASSIGNOB, BY IESNE ASSIGNMENTS,

T SIGNODE STEEL BTBLPPING OOIPANY, A CORPORATION OI DELAWARE ammo Toor.

`Application iled August 82, 1997. serial lo. 214.509.

My invention relatesto sealing tools..

More particularly it relates to a sealing tool of the type used to jointhe overlagipin ends of metal bands employed to bin pac ages,

3 such as groups of merchandise, bales, boxes,

crates and the like. A well known and tensively used tool of thisgeneral vcharacter is illustrated in United States Patent No.

1,038,109, granted September 10, 1912.

In the use of a sealing tool of the kindillustrated in theaforementioned atent the band is tightened about the pac age and,afterlapplication of a suitable channel shaped sleeve or 'rth such, forexample, as illusis trated in nited. States Patent No. 1,445,330,granted Februa 23, 1913, .the sleeve and overlapping ban subjected to anedge-wise deforming or crimping o ration by the sealing tool so that zothe ends o the band and the sleeve are made to form a joint or sealwhereby they are held together under the previously created tension.tion, the sleeve or girth must initia y fit loosely upon `theoverlapping band ends and in consequence there is consi erable clearancebetween the walls of the longitudinal grooves of the sleeve and theedges of the band.

A diicult encountered with the sealing so tools hereto ore used is thatthe flanges o the sleeves or 'rths are not suiciently turned or tuckedun er the bands prior to the deorming operation. In consequence, thegirth o r sleeve often is not drawn suiciently tight a ainst the edgesof the band and particular y in the region of reatest deformation, theedges 'of the anges are extruded inwardly towar the package, therebyforming proections that uently chafe the package an its contentsanrevent the from lying dat on t e package.

Furthermore, because of this inward extrusion, the resistance of thegirth flanges against s reading or separation under the tension o theband is lessened and the joints do not withstand as much tension as theymight if the extrusion was eliminated. r-

dinarily these diculties become more pronounced as the thickness of sealor joint impossible ends are simultaneouslyl Another object is To insureease and speed of ap licathe girth metal l is increased s that it hasbeen l age and maybe provi the joints Agreatly to raise the strength ofgirths of produced by employing sleeves or greater thickness.

One of the objects of my invention is to provide an improved sealingtool.

Another object is to provide a tool that will produce a joint that willnot chae the package.

Another object is to provide a tool which will produce a joint that isilat against the package.

Another object is t'o provide a tool that will produce a stron er jointwithout changing the character o the materials used in making it.

Another object is to provide a tool that will produce a satisfactoryseal or joint with material of greater thickness than satisfactorilyused heretofore.

to provide a tool that than those heretofore will operate easier used. 1

Another object is to provide a tool that is simple, reliable andinexpensive to manufacture. l

Other objects and advantages will hereinafter appear. -f

A'n embodiment of .the invention is illustrated in the accompanyingdrawing wherein: su Fi 1 is a side elevation of a tool in o n conditionas applied to the work, whic is shown in position between the jaws;

Fi 2 is a side elevation with the jaws in close position at the end ofthe sealing opera- $5 tion;

Fig. 3 is a longitudinal sectional view with the 'aws closed; Fig. 4 isa bottomview of the jaws in open position; and oo Fig. 5 is a' bottomview of the jaws closed. The tool comprises a pair of levers or handles10 andA 11 hinged to ther by a pivot pin 12 so that they may operatedlike a air of shears. Pivot pin 12 may be in the 95 orm of a bolt havingan inte l head 13 at one end and av removable nut 14 at the other. Theupper ends of the handles may be extended suiciently to 've the desiredlevered with suitable grips to facilitate the users holding and cperatinencircling sleeve and for the tool anvil or brought together lto clamped one chair to be hereinafter described. The wedge sha ed lips or;forward terminals of 'aws 15'.:

an 16 are formed withalternate projections 2O and notches 21 positionedso that the projections or teeth of one jaw intermesh into the notchesof the other jaw lwhen the -tool is closed.

Centrally located in the face of each jaw 15 and 16 is a curve-faceddeforming pin 22 and 23 respectively, lwhich may be 1n the form ofhardened inserts tightly fitting into sockets in the faces of the jawrecesses. The best results have been attained by forming the confrontingfaces of these inson substantially semi-circular arcs. o their rear endsthese deforming pin sockets may be extended through the jaws asrelatively small holes 24 and 25, res ectively, throu h which a suitabletool may be inserted and riven to force out the deforming pins should itbe.- come desirable because of breakage'or other causes to remove them.

An anvil or seat 26 lies in the channel formed by the jaw recesses. Thisseat .or chair is shaped like a stirrup having two parallel legs throughwhich bolt 12 is adapted to pass to pivotall connect itin lace. Whenthejaws are fu ly open a shoul er 27 on each lever engages the side of theseat or anvil so as to centrally position the tsame in the channelbetween the jawsas shown in Fig. 1. When the jaws are completely closedthe seat is likewise heldin central position by the faces of the jawsenga -ng the same, as clearly ,shown in Figs. 2 an 3. Between these twoextreme lever positions, however, the chair or anvil is free to pivotabout bolt 12. The opposite ends 28 of seat 26 yproject slightlybeyondthe intervening portion so as to rovide a central depression 29 toaccommodate a slight elevation or bulging of the band ends and greatestdeformation,

escribed.

In operation the jaws are opened and the tool set down over thepreviously tensioned band, toY whose overlapping endsa channel shapedsleeve has been applied, until the chair or stirrup touchesfthe band asshown in Fig. 1. Then the handles of the tool are ve-wise restricted andop ositely positi regions of the overlappe bands and sleeve-,'the finalposition being shown in Fig. 2. 4 u stages of this clamping action thelips of the jaws fold or tuck the flanges of the sleeve tightly aroundthe edges of and under the sleeve at theregion of as `will behereinafter or fitf'fthe clamping action During the first bands. Theinteritting notch and projection formation of the jaws permits thelocation of the deforming pins 22, 23 well behind their ti s so that thetuckinnr sleeve anges may edge-wise sealing tion begins. Thus theinitially necessary clearance heretofore mentioned is removed and thesleeve flanges clamp the edges of the. overlappingfbands tightlytogether. Furtlier1nore ,this construction permits the `aws completelyto underlie the joint throng out so that the sleeve flanges when oncedrawn tightly about the edges of the band' and tucked under flat againstthe lower bandare retained in this conditionand `prevented fronilbulgingor extruding inwardlyor toward the"A package. After the flan'gesare thusdrawn about the edges of vand tucked' under the bands, furtherclosingo'f the, jaws brings Vthe deforming pins 22, 23 into vactionwhereupon the opposite edges ofthe band-s and sleeves are deformedtoward each other in sharply defined, restricted areasco'nforming quiteclosely to the curva'tureof the dei'or ing pins.

'lhe edge-'wise deformation is accommodated'by an outward bulge of thesleeve and band in the deformed area, limited by engaging theintermediate olf-set area of the anvil orchaiiyand because of theintermeshing of the jaws vto jfirevent'inward extrusion ofy the flanges,the flanges turn outwardly intothe b ulge as clearly shown in ,Fi-g. 3,rather than inwardly or toward the package as with 'formerjtols "lhusthe characteristic bulge inthe sleeve andband forms a pocket-like recessfor the deforming flanges and lan exceedingly4 compact, tight and strongjoint is produced. Because the flanges or edges of the sleeve arefoldedtightly labout the edges of andvtucked under the bands initially,held there duringthe further closing of the jaws `and forced outwardlyinto the bulging or deformed o`cket,'th'el seal or jointis exceedinglyti'g it and fltn itsunderside'and' will lie flat against Yandfclose tothe package. he vscaling operation is accomplished with less effort on`the part of the operator because the operations performed vbythe tool(i. e. the initialffoldi'ng and tucklng of the sleeve flanges andthesubsequent edgewise dformationofthsleeve and band) take place insequence.y V'Ihevdeformations can be made kdeeper because the deformingpins can be permitted to project further beyond the faces 'of the jawsthan with former tools,'resulting in a .strongerI joint with metal ofthe same 'gauge or k permitting the formation ojf satis.- factoryjointsz with sleeve metalof'heavier yg'au e. y", .l f

f O ,viously a sealing tool ofthe ftype herein described yneed notnecessaril, be con'- -structed of p ivotally connected Alevers. but

may consist of slidably connected levers, or

under of the f be fully (Tone before the 7b or interlocking deformaanother form of interconnected levers provi 'ng for a shear-like operationof levers and aws.

1 Having thus illustrated and described the nature and one embodiment ofmy invention what I claim and desire to secure by United States LettersPatent is as follows 1. A sealing tool comprising a pair of pivotallyconnected levers having confronting deforming jaws on one side of thepivot, said jaws each having a projecting lip overhanging the workengagin deforming surfaces of the jaw and a notch or receiving the lipof the other jaw so that when the jaws are closed the lips extend beyondthe plane of the center of the pivot.

2. A sealing tool comprising a pair of levers pivoted together tooperate like a pair of shears and having confronting deforming jaws onone side of the pivot, each jaw having projecting lips overhanging thework engaging surfaces of the jaws and;v

notches arranged so that the lips of one jaw lie o posite the notches ofthe other jaw and the ength of the lips and depth of the notches beingsuch that the lips extend beyond the plane of the center. of the pivotwhen the jaws are closed.

3. A sealing tool com rising a pair of confronting jaws, means or movingthe jaws toward one another, deforming pins in the sides of the jaws forthe edgewlse deforming of a package band and an anvil between the jaws,said jaws each having a projecting lip and a notch for` receiving theprojecting lip of the other jaw, so thatwhen the jaws are closed saidlips extend beyond the plane of the center of the anvil.

4. A sealing tool comprising a pair of confronting jaws, means formoving the jaws toward one another, deforming pins in the opposed facesof the jaws for the edgewise deformin of a package band when the jawsare close and an anvil mounted between the jaws, each of said jawshaving a projecting lip and a notch for receiving the lip of the otherjaw, overhanging the anvil whereby movement of the jaws toward oneanother will confine the package band prior to the edgewise deformationof the band by said deforming pins.

5. A sealing tool for crimping edgewise overlapped metal bands tointerconnect the same, comprising a pair of confronting jaws movabletoward and from each other in the direction of the plane of the bands,each jaw having a, band crimping surface, a projecting lip and a notch,the crim ing surface of each jaw lying to the rear o the lip thereof andthe notch of one jaw positioned to receive the projecting lip of theother jaw and-permit-the lips to pass beyond the median plane betweenthe jaws so that the surfaces of the` jaws may form a closed the medianplane between the jaws, and a'v band-edge crimping surface carried beach jaw to the rear of the projecting lip thereof to come into actionto crimp the bands while the overlapping projecting lips preventextrusion of the crimp between the jaws.

In witness whereof, I hereunto subscribe I my name this 11 day ofAugust, 1927. RUDOLPH E. WESTPHAL.

